Product Details: The DORMER Square End HSS Roughing & Finishing End Mill is engineered from high-speed steel, ensuring superior durability and extended tool life for rigorous machining activities. Its square end design facilitates precise, razor-sharp cuts, making it perfect for creating flat surfaces and accurate 90° angles. By combining roughing and finishing capabilities in a single tool, it reduces the need for frequent tool changes, thus boosting productivity. Featuring an optimized helix angle, it excels in efficient chip removal, ensuring smoother operations and yielding better surface finishes. The heat-resistant coating enhances its performance.